The Economics of soil productivity in sub-Saharan Africa. - Rome : Food and Agriculture Organization of the UnitedNations, 2001. - viii, 58 p. : ill., map ; 21 cm. Includes Bibliographical references and index. ISBN: 9251045224 Subjects--Topical Terms: Soil productivity--Economic aspects--Africa,Soil management--Africa, Sub-Saharan. LC Class. No.: ORG S599.5.A1 / E36 2001